I took a vistaril 25mg at 630am when is it safe too take 1 librium 25mg ?

Meds : It is over 12 hours so it will not cause any problem. Good Luck

Late in the day: The combination may make you feel more drowsy and sedated. Because Vistaril stays in the system for awhile, the safest idea is that the 1st time you take these meds the same day, take them later when you won’t be required to do anything that requires coordination like driving / operating heavy machinery, which could pose a danger to others, to get a sense of how you react.